18748750

素因数分解:

$2^1\times 5^4\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:358

約数の個数: 40

約数和(自身を含む): 35932248

約数和(自身を除く): 17183498

約数列:

[1, 2, 5, 10, 25, 50, 53, 106, 125, 250, 265, 283, 530, 566, 625, 1250, 1325, 1415, 2650, 2830, 6625, 7075, 13250, 14150, 14999, 29998, 33125, 35375, 66250, 70750, 74995, 149990, 176875, 353750, 374975, 749950, 1874875, 3749750, 9374375, 18748750]

約数ペア:

[(1, 18748750), (2, 9374375), (5, 3749750), (10, 1874875), (25, 749950), (50, 374975), (53, 353750), (106, 176875), (125, 149990), (250, 74995), (265, 70750), (283, 66250), (530, 35375), (566, 33125), (625, 29998), (1250, 14999), (1325, 14150), (1415, 13250), (2650, 7075), (2830, 6625)]